NGC 55 ：星雲之星系
NGC 55: A Galaxy of Nebulas
來源：Wolfgang Promper;
Text: Ogetay Kayali
(MTU)｜發表日期：2026-01-26
你能看到其他星系中的星雲嗎？是的，某些星雲足夠明亮——只要你懂得如何觀測。氫氣和氧氣的雲團會發出特定波長的光，透過分離這些光譜，天文學家和天文攝影師得以揭示那些原本過於微弱而難以察覺的結構。 這張耗時 50 小時的深空曝光照片，突顯了NGC 55 星系中熾熱的氫氣（紅色）與氧氣（藍色）分佈。該星系近乎側面朝向觀測者，又名"珍珠串星系"，常被比作銀河系的衛星星系大麥哲倫雲（LMC），但NGC 55 實際距離我們約 650 萬光年，遠超後者。 成像揭示了星系塵埃盤內及上方散佈的發射星雲，使遙遠的星形成區域得以清晰呈現。拼圖星系：每日天文謎題
原文：Can you see nebulas in other galaxies? Yes, some nebulas shine brightly enough -- if you know how to look. Clouds of hydrogen and oxygen emit light at very specific colors, and by isolating them, astronomers and astrophotographers can reveal structures that would otherwise be too faint to notice. This deep, 50-hour exposure highlights glowing hydrogen (red) and oxygen (blue) across galaxy NGC 55, viewed nearly edge-on. Also known as the String of Pearls Galaxy, NGC 55 is often compared to our Milky Way's satellite galaxy the Large Magellanic Cloud (LMC), although NGC 55 lies much farther away at about 6.5 million light-years. The resulting image uncovers a sprinkling of emission nebulas within and sometimes above the galaxy's dusty disk, offering a detailed look at distant star-forming regions. Jigsaw Galaxy: Astronomy Puzzle of the Day
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。